Click on the third or sixth rank to set the en passant target square.

EGTB: win in 4 half-moves

# move score
1 Rb8 win in 3 half-moves
2 Ka3 draw
3 Ka5 draw
4 Kb3 draw
5 Kb4 draw
6 Kb5 draw
7 Kb6 draw
8 Kb7 draw
9 Kb8 draw
10 Kc8 draw
11 Kd7 draw
12 Kd8 draw
13 Ra2 draw
14 Rb1 draw
15 Rb6 draw
16 Rb7 draw
17 Rc2 draw
18 Rd2 draw
19 Rg2 draw
20 Kc6 loss in 2 half-moves
21 Kd6 loss in 2 half-moves
22 Rb3 loss in 2 half-moves
23 Rb4 loss in 2 half-moves
24 Rb5 loss in 2 half-moves
25 Re2 loss in 2 half-moves
26 Rf2 loss in 2 half-moves
27 Rh2 loss in 2 half-moves